1,25-Dihydroxyvitamin D

Alternative Names/Synonyms	1,25-(OH)2 Vitamin D, Calcitriol
Laboratory	Core Laboratory & Transfusion Medicine
Sub-section	Biochemistry
Specimen Type	Blood
Test Code	125D, 125DP

Clinical Significance (If applicable)

Investigating calcium metabolism disorders.

Specimen Requirements (Sample Type)

Serum, Plasma

Specimen Requirements (Volume (mL))

0.5 mL

Specimen Requirements (Tube Type)

Serum (Gold SST)
Plasma (Light Green PST)
Collection Containers – Tube Types

Collection Requirements

Collection Instructions

Sample Stability

Room Temperature: 7 days

Fridge: 2 weeks @ 2-8°C

Freezer: 6 months @ -20°C

Cause for Rejection

Specimen Acceptability and Transport Guidance

Instrument, Methodology

Liaison XL, immunoassay

Test Availability

Weekdays

Routine Turnaround Time

1 week

Reference Ranges

48 - 190 pmol/L

In case of discrepancies, always interpret results using reference ranges as stated on laboratory reports and/or electronic patient chart.

Laboratory Contact Information

416-586-4800 extension 4688